I HAVEN'T SIGNED UP TO SKY BUT USE THE SKY HD BOX FOR FREEVIEW AND HAVE DONE FOR A COUPLE OF YEARS.ALL OF A SUDDEN IT'S PACKED UP! I've pressed BACK UP and held it before turning the box on and all four lights come on as it re boots itself and then the orange light instead of the red light comes on and thats it! Any suggestions how to get it working again?!